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Availability: In stock

Rings of ray florets encircle a lighter center creating a striking contrast
€0.720 each
Tier Prices
  • Buy 25 gram for €0.720 each
  • Buy 50 gram for €0.600 each
  • Buy 100 gram for €0.500 each

ASTER chinensis PRINCESS MIXTURE is available for purchase in increments of 25 gram.



Callistephus chinensis
PRINCESS Formula Mix

Culture guide

Plants for the border, pot and container plants, plants for patio and window boxes, cut flowers

Sun - Partial shade

Garden height:
28" / 70 cm

Crop time:
14-15 weeks

Sow time:
January for flowering in May (artificial long days); May for flowering in September (natural day length); July for flowering in January (artificial long days)

Sowing method:
3-5 seeds per plug, sowing in final pots is possible

10-12 days at 68-70 °F (20-21 °C), cover seed lightly with vermiculite after sowing. To prevent premature flowering, keep plants vegetative with a four hour night interruption

Growing On:
Transplant plugs after 3-4 weeks. Grow on at
58-60 °F (14-16 °C). Cool temperatures promote a good plant habit, but may delay flowering.

Use a well-drained, growing substrate with 20-30
% clay, 1-1,5 kg/m³ complete balanced fertilizer,
0-2 kg/m³ slow release fertilizer (3-6 months), iron-chelate, micronutrients, pH: 6.0-6.5. Use a sterile medium and sterile pots/containers as preventative measures against Fusarium and Verticillium. Field: sandy loamy soils with good drainage and moderate nutrition levels. Standard fertilization: 80-100 g/m² slow release fertilizer. Disinfect the soils in greenhouse before planting.

Grow at 12-15 °C. Callistephus do not grow temperatures below 8 °C and do not tolerate frost. The lower the temperature, the better the plant habit but onset of flowering will be a little delayed. Lower temperatures combined with short days cause the development of a leaf rosette and short stems.

Moderate-high fertilization levels are required. Fertilize the crop weekly with 100-150 ppm nitrogen (at 2 kg/m³ slow release fertilizer in substrate), using a potassium balanced fertilizer (N: K2O-ratio: 1:1,5). Avoid high ammonium and high nitrogen levels. High nitrogen levels will cause smooth stems. Prevent magnesium deficiency by applying magnesium sulphate (0,025 %) 1-2 times and in case of iron deficiency apply iron-chelate for 1-2 times.
Field: N min soil value: approximately 150 g/m².

“Information copied from the breeder.
Muller will not accept any liability for failure and/or damage as a consequence of incorrect and/or inexpert cultivation by or on behalf of the Buyer.”